According to the site, the collection contains three versions of There’s A Place as well as demos of two songs the group gave to other artists — Paul McCartney and John Lennon’s acoustic version of Bad to Me and Lennon’s piano demo of I’m in Love.

The Beatles are not the first band to issue rare material in a bid to extend copyright.

Bob Dylan’s record label rushed out 100 copies of an album last year containing early TV performances, alongside multiple versions of Blowin’ in the Wind, Bob Dylan’s Dream and I Shall Be Free.

Officially called The 50th Anniversary Collection, it carried a subtitle which explained its true purpose: The Copyright Extension Collection, Vol. 1.

A second volume followed this year, while Motown has also begun issuing rare recordings on iTunes under the “Motown Unreleased” banner.

Given the low-key nature of the release, it is likely that Apple Corps, the Beatles’ record label, will take down the new material after a brief period, allowing them to exploit the recordings in a more considered way later on.

However, it is likely that the release of rare material will become an annual event, as the band seek to protect their works for another 20 years.

Lifetime achievement

Meanwhile, a more glossy campaign is being mounted to promote a new Beatles box set, which is being released to mark the 50th anniversary of the band’s first trip to America.

The 13-disc set includes all of the band’s American albums, including five that have never been available on CD before.

Many of the records feature different titles, track listings, mixes, and artwork from their UK versions.

The band will also be given a lifetime achievement award by the Grammys in 2014, during a special ceremony the night before the main event.

German electro pioneers Kraftwerk, country star Kris Kristofferson and soul group The Isley Brothers will also be honoured.